Electrical connector.



G. M. STEINBR.

- ELECTRICAL CONNECTOR.

APPLICATION FILED JULY 9, 1910.

Patented Apr/1, 1911.

i .nectio'n isi made by ;};c0rres'pondingly threaded plug UNITED STATES CLARENCE M. STEINER, OF PITTSBURG, PENNSYLVANIA.

ELECTRICAL Specification of -To all wno'm it may concern:

Be it known that I, (limo-men M. S'rinxnn, residing at littsburg, in the county of Allegheny and State of Pennsylvania, have in- 5 vei1ted.a new'and useful Improvement in ElectricalConnectors, of which the follow- 2 ing is a full, clear, and exact reference being had to the accompanying -=.drawings,which form part of this 'speciti- 10 cationgfif 'This' iiflQlltwli i'elatcs to electrical counectois and particularly to the class more oininonly embodying plugs and sockets be- \tweehfivhichelectrical and inechanical conmeans of one or more iSOIfGW-flllolidrdz nemb'ers. Such embodi- "ixinit.is-w presented in the screw-threaded connection ,bctween'a standard socketand the ba's'e' of an Edison incandescent lamp or carrying n-fle'xible conductor for connection with a lamp, motor, or other device,-and which is mmmonly"known as a cord plug or attachment plug. And the primary object of my .invention is the provision in an electrical connector of the above-mentioned type, of means whereby the plug member may be easily and readily attached to and detached from the socket, for making and breaking .30 of the electrical and mechanical connection 'between' the respective members, without.

extended rotation of the plug.

In connection with an attachment plug my invention will be found particuh rly ad- 85 vantageous in that itrenders it unnecessar v tgatwist and kink the flexible conductor of? oo'rd'in making the connection above menn I ,t'ioncd betwcen the plug a-nd socket.

" I,- also aim "to provide meansto prevent. the loosening and eventual separation of .the lamppr-the cord plug from the socket,

consequent upon vibration.

I will now describe my invention so that others'skilled in the art to which it appertains may understand and construct. the some, referring to "the accompanying drawings in which I have shown my invention as applied to an attachment plug and socket.

PATENT OFFICE,

CONNECTOR.

Application filed July 9, 1910. Serial No. 571,132.

tion to the connection shown, as it will be I apparent, without; necessity of specific illustration, that the same may be applied to incandescent lamps and the like, and to Figure 1 is an elevation of a connected socket and attachmentplug, partly in sec-- enee numeral 2 indicates'the bodyof an ordinary attachment plug, formed of suitable insulating u'latcrial, usually porcelain; this body carries-the regular central contact. 3 which is adapted to engage the central contact 4 of a socket, such as the ordinary lamp socket indicated by the.-numeral 5. and theouter band or sleeve contact 6 which is adapted to be received by and from electrical contact with the sleeve .or shell 7 of the socket. "This circuit terminal in the form of the sleeve 6 ON 'narily comprises a non-yielding hand, screw-threaded for substantially its full length in complement with the screw-threaded shell 7 of the's'ockct. In the. presentimproved eons ru tiou of the numeral 8, formi ng thereby the milient tongues or fingers 9, which permit of the plug'being thrust-into the socket pending positive attachment of the sleeve 6 with the threaded shell 7 by means of the screwthreads 10 carried below the tongues or fingers 9 by the non-yielding base of the plug. Temporary connection of the plug with thesockct. pending such positivelocking of the members, is effected by means of .Ido not, however, desire to limit my inventhe threads or protuberances 11 carried by sockets other than the type shown, such as wall sockets. description,

my invention. longit'mlinallv slot or cut away the sleeve-Gas indicatedbv Referring to Figs. 1,2 and 3, the refershifted into positive engagement with the threads of the shell 7 by substantially only one turn or revolution of the plug, after the latter has been thrust in the socket the full depth permissible by the resiliency of the fingers 9. It will be seen that, in my improved connection; there is no tendency to formation 01 destructive arcs upon the direct insertion of the plug. for the rotative feeding of the plug to positive engagement with the socket presents the center contact of the plug to that ofthe socket in the usual manner.

I do notdesire to limit myself to the particular form of sleet-e6 shown in Figs. 1. 2 and 3. For instance. in Fig. 4 I show a somewhat modified construction in which the fingers 9 are provided each with thesin- 'gle protuberance or thread 11" instead of being threadedfor their full depth in the manner shown in Fig. 1. Alsoras shown in- Fig. 5, the number of the resilient fingers 9 may vary In this view'-- these fingers are greater in number and of a somewhat narrower construction than the fingers shown in the views 1, 2 and 3.

Referring to Fig. 6, I.show a reversion of the construction shown in the preceding fi nres. In this construction resilient fingers 9 corresponding in function to the fingers 9 of the plug. are carried bytheshell 7 of the socket. This form of shell is adapted to receive the usual form of threadedplug 13, illustrated in Fig. 7. The yielding fingers 9' permit, as in the case of thefingers S), of the plug being thrust into the, socket and there being temporarily held by the threads 13, pending positive attachment. In this case such positive connection is made between the threaded top of the plug and the non-yielding upper portion 14 of the shell 7, by means of the suitable interior threads 15. The slotting of the shell 7 of this socket shown in Fig. 6 corresponds substantially with that of the plug shown in Fig. 5,. but may be varied as desired without departing from my invention.

arrangement, but is equally applicable to correspondingly threaded plug members, such as amincandcscent lamp base, plug fuses, or similar device etc. And while I have described the sleeves or shells 6 and 7 as forming electrical terminals, it is obvious that there would be no departure from my invention to employ these members independently of electrical terminal service.

It will be apparent that many other changes may be made in the construction shown without departing from my invention and I do not therefore desire to limit myself thereto. k

Having thus described my invention,what I claim and desire to secure by Letters Patent is 1. In a device of the character described, the combination of a body .portion, means carried thereby for effecting rotative posi-' tive attachment to a body adapted for em operative connection therewith, and yield able means carried by the body portion, forv effecting supporting engagement thereofwith the body, pending such positive attachment.

. .2. In a device of the character described, the combination of a body portion, a threadedsleeve carried thereby for effecting rotative positive attachment to a body adapted for -'co6perative connection therewith, and yieldable means carried by the body portion,

for effectin supporting en agement thereof with the body, ment.

3. In a device of the character described, the combination of a body portion, a threaded sleeve carried thereby for effective rotative positive attachment to a body adapted for cooperative connection therewith, and yieldable means carried by the sleeve, for effecting supporting en agement thereof with the body, pending suc ositive attachment.

4:. In a device of t e character described, the combination of a body portion, a threaded sleeve carried thereby for effectin rotative-positive attachment to a body a dapted for. cooperative connection therewith,-and a yieldable finger carried by the body portion, for effecting supportmg engagement pending suc positive attachthereof with the body, pending such positive attachment.

5., In a-device of the character described, the cbmbination of a body portion, a sleeve carried thereby for effecting rotative positive attachment to a body adapted for cooperative connection therewith, and a yieldable finger carried by the sleeve for effecting supporting-en "agement thereof with the body, pending suc positive attachment.

6. In a device of the character described, the combination of a body portion, and a cylindrical sleeve carried thereby, the sleeve being longitudinally slotted from one end In testimony whereof, I have hereunto set for a portion of its l ngth and provided my hand. with a protuberance lying outside the zone of the slots and adapted for effecting lo'ck- CLARENCE 'STEINER" 5 ing engagement between the sleeve and a Witnesses:

body adapted for cooperatlve association Moses A. KELLER,

therewith. M. A. BARrrH. 

